Disintegrator



Patented Sept. fi, 1928.

unirse srarris A 1,683,244 narrar orFICE' WILLIAM IVI. 'DUNCAL OF.AI/20N, ILLINOS.y l

IDL'SINTEGRTOR.

vApplication led August 1, 19g/i7. Serial No. 203,809.

vThis invention relates to' disintegrators, and more particularly to adisintegrator providedV with pivotally supported hammers which strikethe materialV to vbe crushed, pulverized, or otherwise acted upon.Hammers of thi-S kind usually consist of va head'formed integral with anarm, or arms, vwhich are pivoted to a rotary carrier. rlhe hammer# headsare rapidly worn away by abrasion and the shocks they receive inservice. 1t is, therefore, necessary to frequently renew the hammers,and in the ordinary structures this involves the 'cost of not only theworn haininer-head, but also t-he arms or the like connecting the headto the rotary carrier.

One of my objects is to reduce the maintenance costs by producing ahammer with a simple and inexpensive detachable head which can berenewed without renewing other parts of the hammer structure. n

A. further object is to easily and quickly accomplish this withoutremoving the arms,

or the like, which support the head., thereby reducing the labor ofmaking repairs.

Another object is to produce a strong and durable connection adapted tosecurely attach the hammer head, without danger of breakage ordisplacement when the device in service.

With the foregoing and other objects in view, the invention comprisesthe novel construction, combination and arrangement of parts hereinaftermore specifically described and illustrated in the accompanyingdrawings, wherein is shown the preferred embodiment of the invention.However, it is to be understood that the invention comprehends changes,variations and modifications which come within the scope of the claimshereun to appended.

Fig. 1 is a side elevation, partly in section, illustrating a rotarycarrier provided with detachable hammer-heads embodying the features ofthis invention.

Fig. 2 is a section on the line 2-2 in Fig. 1, with some of the parts inelevation.

Fig. 3 is an enlarged section on the line 3,3 in Fig. 2.

Fig. e is aperspective view of one end of the detachable hammer-head.

Fig. 5 is a perspective view of the plate and keepers which secure thedetachable head to the yoke or stirrup.

To illustrate one form of the invention I have shown a disintegratorprovided with a rotary carrier comprising pairs-of disks 1 secured to arotaryshaftrQ, so as to rotate with the shaft.V The disks of each pairbe located between smaller disks 3 znf1`d `at'opY .I

posite sides of .as pacing disk 1p/Fastening devices', such as'rivetsmaybe used toconr nectvthe several disks in each group.

6 designz'ites'V han'nnerheads' which may necting said arms. One end ofeach arm 71s confined between a pair of disks 1'. A'pivot rod 9 passesthrough both pairs of disks 1 and alsothrough the arms 7' to pivotallysecure the hammers to the rotary carrier. Each pivot rod l9 is securedby means of a tube 10 (Fig. 2) surrounding the rod, and a cotter pin .11passing throughsaid tube and rod. The inner disks 1 cooperate with theends of the tube 10 to prevent longitudinal displacement of the rod andtube. To illustra-te a suitable means for securing the detachablelhammerheads G, I have shown a plate 12 seated on the connecting member8 of the U-shapedyoke. This plate 12 is parallel with the member 8, butits side margins extend from the sides of said member as shown inFigures 1 and 3. rlfhe hammer-head has a longitudinal recess 13 in whichthe connecting member 8 is located, and the side walls of this recessare provided with longitudinal grooves 14C (Figures 1, 3 and 4)' toreceive the extended side mar- 1 gins of the plate 12. rllhe hammer-headis thus securely interlocked with its holder by means of interlockingelements which lie parallel with the aXis of the shaft 2.

To illustrate a suitable retaining device for preventing longitudinaldisplacement of the head 6, l have shown keeper bars 15 between the endsof the plate 12 and the inner faces of the arms .7. These bars 15 arearranged transversely of the connecting member 8, and

their end portions extend through notches 16 (Fig. 11) in the ends ofthe hammer-head to preventlongitudinal displacement of said head. Eachbar 15 is thus located between one of the arms 7 and portions of theheadV 6. The endsof these keeper bars 15 may be bent as shown in Figures3 and 5 to lock the bars in their operative positions.v

1n removing` the hammer-head 6 it is only necessary to remove one of thekeeper bars 15, and to then slide the head longitudinally of the plate12. The space between the flanges 17 on the head 6 is wide enough toreceive one of the arms 7 so the arm does not prevent removal of thelead.

The circle 20 in Fig. l indicates the grinding surface which supportsthe material to be acted upon by the hammers.

I claim:

1. In a disintegrator, a rotary carrier, a

' hammer-holder pivoted to said carrier, interlocking elementsextendingfrom the sides of said holder', a hammer-head having interlockingelements slidable on the first-mentioned elements, and a keepercooperating with said head and holder to prevent displacement of saidhead. 'l Y 2. In a disintegrator, a rot-ary carrier, a hammer-holderpivoted to said carrier, ahammer-head removably interlocked with saidholder, said hammer-head being slidable in a line parallel with the axisof said rotary carrier, and a keeper cooperating with said head andholder to prevent displacement of said head.

3. In a disintegrator, a rotary carrier, a substantially U-shaped yokecomprising arms pivoted toksaid carrier and a member connecting saidarms, a hammer-head having a longitudinal recess in which saidconnecting member is located, said head and yoke` being provided withinterlocking elements detachably securing said head to said yoke, and aretaining device cooperating With said interlocking elements to preventdisplacement of said head.

4. In a disintegrator, a rotary carrier, a substantially U-shaped yokecomprising arms pivoted to said carrier and a member connecting saidarms, a hammer-head having a longitudinal recess in Which saidconnecting member is located, said head and yoke being provided Withinterlocking elements detachably securing said head to said yoke, saidinterlocking elements being arranged longitudinally of said head and inlines substantially parallel with the axis of said rotary carrier, and aretaining device cooperating with said interlocking elements to preventdisplacement of said head.

5. In a disint'egrator, a. rotary carrier, a substantially U-shaped yokecomprising arms pivoted to said carrier and a member connecting saidarms, a plate seated on said member and extending from thelsidesthereof, a hammer-head having a longitudinal recess in which saidconnecting member is located, the side Walls of said recess beinggrooved toreceive the extended portions of said plate, and keeper barsarranged over said connecting member and between said arms and hammerhead to prevent displacement of said head.

In testimony that I claim the foregoing I hereunto ailix my signature.

yWILLIAM M. DUNCAN.

